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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 149 · 40 sums
TalentJR

The method (90, 180, equal): Complement of a = 90 − a. Supplement of a = 180 − a. Lines crossing: vertically opposite angles are equal; a linear pair adds up to 180°. Parallel lines: corresponding angles equal, alternate interior angles equal, interior angles on the same side add up to 180°. One angle d° more than the other: bigger = (total + d) ÷ 2.

NameDateTime takenScore ___ / 40
  1. 1.Two straight lines cross each other. One of the angles formed is 44°. What is the angle vertically opposite to it (in degrees)?
  2. 2.What is the complement of 27° (in degrees)?
  3. 3.What is the supplement of 90° (in degrees)?
  4. 4.What is the complement of 46° (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 41°. What is its other interior angle on the same side of the transversal (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 46°. What is the angle next to it on the same line (in degrees)?
  7. 7.Two angles are complementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One interior angle is 69°. What is its other interior angle on the same side of the transversal (in degrees)?
  9. 9.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One interior angle is 138°. What is its alternate interior angle (in degrees)?
  11. 11.Are 64° and 26° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  12. 12.Two straight lines cross each other. One of the angles formed is 151°. What is the angle vertically opposite to it (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 113°. What is the angle next to it on the same line (in degrees)?
  14. 14.Are 47° and 50° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  15. 15.Are 24° and 156° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  16. 16.Are 26° and 168° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  17. 17.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  18. 18.Are 70° and 20° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  19. 19.Are 26° and 64° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  20. 20.Two straight lines cross each other. One of the angles formed is 24°. What is the angle next to it on the same line (in degrees)?
  21. 21.Two angles are supplementary. One is 94° more than the other. What is the bigger angle (in degrees)?
  22. 22.Are 78° and 102° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  23. 23.Two straight lines cross each other. One of the angles formed is 26°. What is the angle vertically opposite to it (in degrees)?
  24. 24.Are 65° and 25° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  25. 25.What is the supplement of 17° (in degrees)?
  26. 26.What is the supplement of 5° (in degrees)?
  27. 27.What is the complement of 42° (in degrees)?
  28. 28.Are 16° and 94° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  29. 29.What is the complement of 62° (in degrees)?
  30. 30.What is the supplement of 82° (in degrees)?
  31. 31.Are 77° and 83° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  32. 32.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  33. 33.Two angles are supplementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One interior angle is 35°. What is its other interior angle on the same side of the transversal (in degrees)?
  35. 35.Two parallel lines are cut by a transversal. One interior angle is 119°. What is its other interior angle on the same side of the transversal (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 121°. What is the angle vertically opposite to it (in degrees)?
  37. 37.What is the complement of 33° (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One interior angle is 40°. What is its alternate interior angle (in degrees)?
  39. 39.Are 56° and 34° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  40. 40.What is the supplement of 103° (in degrees)?

Answer key

  1. 44
  2. 63
  3. 90
  4. 44
  5. 139
  6. 134
  7. 77
  8. 111
  9. 60
  10. 138
  11. Complementary
  12. 151
  13. 67
  14. Neither
  15. Supplementary
  16. Neither
  17. 61
  18. Complementary
  19. Complementary
  20. 156
  21. 137
  22. Supplementary
  23. 26
  24. Complementary
  25. 163
  26. 175
  27. 48
  28. Neither
  29. 28
  30. 98
  31. Neither
  32. 49
  33. 109
  34. 145
  35. 61
  36. 121
  37. 57
  38. 40
  39. Complementary
  40. 77

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